What happens if an 8085 microprocessor 8085 is executing a program and it gets a request from the Ready, Hold and Reset pins at the same time?

How will microprocessor respond?

  • \$\begingroup\$ Please edit your title. We can hear you just fine, you don't have to shout. If you have a typical English keyboard, the caps lock key is just to the left of the 'A'. Please disengage it and try again. \$\endgroup\$ – TimWescott Dec 3 '20 at 6:41
  • \$\begingroup\$ I'd guess that Reset would take precedence, but why don't you read the manual? \$\endgroup\$ – Neil_UK Dec 3 '20 at 6:57
  • \$\begingroup\$ Reset has to be the highest priority signal (logically). \$\endgroup\$ – Mitu Raj Dec 3 '20 at 8:07
  • \$\begingroup\$ Hold on while I go back to the 1980s and check. \$\endgroup\$ – user_1818839 Dec 3 '20 at 11:47

It depends.

The RESET, HOLD and READY signals are sampled at different times in the T-states, which is explained in the appropriate manual.

Why are you using an almost 40-year-old microcontroller might be a good question.


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